Coupling shank and yoke connection.



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COUPLING SHANK AND YOKE CONNECTION. APPLICATION FILED MAIL-31. I9I5.

].;,l5'?,084. l Patented Oat-19, 191.5

2 sHEETs-sH'EEI I.'

W. E. COFFIN.

COUPLING SHANK AND YOKE CONNECTION.

APPLICATION FILED MAR. 31. I9I5. l

Patented Oct. 19, 1915.

2 SHEETS- SHEET -2.

B E. COFFIN, OF CLEVELAND', OHIO,'ASSIGNOR TO THE NATIONAL MALLEABLE CASTINGS COMPANY, OF CLEVELAND, OHIO, A CORPORATION F OHIO.

COUPLING SHANK AND-YO'KE CONNECTION.

Application filed March 31, 1915. Serial No. 18,230.

. .en of the United States, and a resident .5 )ted new' and useful Improvements in oupling Shank and Yoke Connections, of which the following'is a specification, refce being had to theaccompanying drawiu Ywhich-- are I is a' side elevation of'my imdevice; l? ig. 2 is a plan thereof; 3 is a bottom View thereof and Fig. 4 section on lines IV-IV of Fig. 1 ,'Fig. an elevation of a modified form of my ce; Fig. 6 is a plan thereof, and Fig. 7 an elevation of a further modification of device. invention relates to coupler shank voke connections, and is designed to a simpleland convenient form of ef ion in which the parts can be readily ected, either by straight rearward `nent of the yoke or by forward movet of the coupler shank, and permits the ...gepleit to angle laterally relative to the yokes It also makes provision for an additional butling bearing on the pivot pin.

AReferring to the drawings, A designates the coupler shank and B the yoke, which is of usual U-shape, open at its forward end. rlhe forward ends of the arms of the yoke are in the form of enlarged bosses 2, which are of greater vertical depth than the thickness of the arms yof the yoke, so as to provide a substantial bearing for the body of the connecting pin or bolt '3. As shown, the `bosses '2 may terminate at their forward ends substantially at right angles to the line of draft. The coupler shank at its rearward has projections 4, which have rearwardly-extending lips overlapping the 2. 'Ihe vertical faces 6 ofthe projections si are cut away or made divergent, to ermit the coupler` to angle laterally. Partandem yoke, such as is shown in Figs. 1 and 2, Iit is desirable to provide additional bn bearings at the upper and lower ends of the pin, by carrying the lips 5 rearwardly and providing -bearings against the pin 3: As shown, one of the lips 5 has a square shoulder 4' coperating with the 'head 8 of the pin, while the other lip 'has a semi-cirenlar recess 9 coperating with the round pcrtion of the pin, so that the pin will rotate Specification of Letters Patent.

'e\.eland, Cuyahoga county, Ohio, havev nlarlywhere my invention is used with a ratemeaoet. 1e, isis.

with the coup'ler'shank and not with the yoke. The overlapping of the projections 4 with the bosses lof the yoke prevents the two aJms of the yoke, which are-not connected at their forward ends, from spreading and thereby. throwing so great a bending moment upon the pin' or bolt as to cause it to bend.

The parts can be readily assembled and the` construction is a very convenient one in facilitating car repairs. the pin or bolt 3 the yokeA and coupler'can be disengaged, either by a straight rearwardV After removing` movement of the yoke or by forward move- A l ment of the coupler shank. This enables the draft gear to be disengaged and. drop down from the car frame, by 'simply sliding 'the coupler forward to an extent suicient to disengage it from the yoke.

In Figs. 5 and 6 I have shown my invention applied to a sleeve connection in which the coupler A is shown riveted to a sleeve C, and the sleeve C is connected to the yoke B by a pin 3. As shown, the lips 5 have semi-circular recesses 9', which engage the forward faces of the pins 3.

In Fig. 7 I have shown the coupler shank A2 having rearwardly-extending lips 52 with apertures 1'0 therein, so that they completely encircle the pin,'\vhich not only provides an additional butling bearing for the coupler shank, but also provides an additional pulling bearing on the pin,^and the strains 'are thereby transmitted to it in quadruple shear. l

The terms and expressions .herein employed are used as terms of description and not of limitation, and I have no intention, in the use of such terms and expressions, of excluding any mechanical equivalent forthe features shown and described, bntrecognize that various structural modiications are.

. Y f f i meme@ of a pivot pin, the bosses having vertically,

extending feces .at theira forward ends, projectioiis on the top nedl bottom of the couple-r shank, having' vel'tieally-extending mol mWardly-Hai'ing faces adapted to oopemte with the forwzml faces of the bosses to permit theeoupei to angle laterally, seid projeetiens .having remwaidlyextending lips adapted to oveirlie said bosses and having e bui'ling beating against the ends e1 the pivot pin, the yoke and. coupler shank being adapted Ito be disengaged after removal of the pin by a longitudinal -movement of either of said members.

2. ln aeo'upler :shank zum yoke Connection, adraft rigging yoke of U-shape, hei ing at .its forwarclfencle integral enlarged bosses e coupler shank having an extension .seated betweei seid bosses, said bosees amil extension being apeitmecl for the reception of a pivot pin, projections on the top and bottom o" the coupler shank Y`having for Warclly-'laring; vertical faces adapted to coeperate with the forward faces of the deesse: te peimit the coupler to angle lzeially, seifi projections also having reeWeidly-extemdy ing lips adapted to overlie said bosses and having recesses the-rein foi' the ends of the pivot pin7 the yoke :incl coupler shank being adepted 'to be disengaged by a longitudinal movement of either thereof after ren'ieml of the pivot pin.

WALTER @einem 

